Engine - Rough Running, Need 2nd Opinion | Ford Escort Owners Association (FEOA)
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Engine Rough Running, Need 2nd Opinion

Discussion in '3rd Gen 1997-2002 2.0L SOHC' started by russix, Nov 19, 2020.

  1. russix

    russix FEOA Member

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    While driving I'm experiencing intermittent roughness and it wants to stall. In this video you see me revving the engine a few times trying to recreate the issue. At about 1:00 it occurs, you can hear the exhaust sound deepen, the engine starts running rough and it begins to stall. Seeking input, thank you.
  2. denisond3

    denisond3 Moderator Staff Member

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    While its hard to tell the sound of a recording (due to the dynamics/placement of the small microphones, etc), the sound I heard included what seemed to be some rough running - at all speeds and throughout the video. When you were revving it up, I would have expected to have it sound much smoother. Again, not easy to tell. I could suspect an injector that wasnt working right, or was working intermittently. Each injector should have 12 volts to one of its wires, the other wire gets grounded by the PCM to make it fire.

    Have you done a compression test? Do the plugs all look dry and near white?
  3. pextor

    pextor Moderator Staff Member

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    Is the check engine light on?

    The first thing I would do is replace the fuel filter and inspect/replace the air filter.
  4. russix

    russix FEOA Member

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    CEL is not on, gonna check for a bad intake manifold gasket tomorrow.
  5. russix

    russix FEOA Member

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    My timing belt is flapping like a black shroud in the wind. Will replace now. Thank you.
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  6. pextor

    pextor Moderator Staff Member

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    When my tensioner failed, my car made a different sound:

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  7. zzyzzx

    zzyzzx FEOA Member

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    Replace the tensioner too!!!
  8. denisond3

    denisond3 Moderator Staff Member

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    I had that same noise when the tensioner in my 93LX let the belt get loose enough to slap on the timing belt cover. I replaced the tensioner. I must not have gotten the old one torqued properly.
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  9. Joshua Schwenker

    Joshua Schwenker FEOA Member

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    Heck, get the kit that includes the pulleys, both idler and tensioner, also make sure you get one with a water pump so you can go and do that too mine also came with seals for the crankshaft ,the cams and the WP I believe
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  10. russix

    russix FEOA Member

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    Anyone ever tried to run the motor with the valve cover off? I think I have a bad valve tappet.
  11. denisond3

    denisond3 Moderator Staff Member

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    You can run the engine with the valve cover off. Expect some misty oil spattering around though; less if you warm up the engine so its at idle speed.
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  12. russix

    russix FEOA Member

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    I replaced a bad lifter, but it still runs rough and sounds like a backfire through the intake. And I have this ticking sound: Injectors or something else?

    Compression test: #1 185 #2 180 #3 185 #4 190
    Last edited: Nov 27, 2020 at 2:41 PM
  13. russix

    russix FEOA Member

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    So I did an Intake Manifold Vacuum test. It warms up with a pretty steady vacuum(no noise). Then the noise will start and the vacuum gauge will flutter from normal down to zero. I think I've gathered enough data to call this a dropping valve seat and will pull the head off before it comes completely free and destroys the rest of the engine. Thank you everyone for your input.
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  14. zzyzzx

    zzyzzx FEOA Member

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    If that is the case, IIRC this would be the first time anyone caught a dropped valve seat before it actually happened. So keep us informed.

    How many miles are on this engine?

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